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Header Fasteners
Mr. Gasket Header Bolts
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Mr. Gasket

Mr. Gasket Header Bolts

4.21 out of 5 stars 47 Customer Reviews

Installing headers can sometimes be a real pain, due to the tight spaces and the location and shape of the tubes. Mr. Gasket can help make installation a little easier and also help prevent annoying exhaust leaks from under-tightened header bolts. They have both the socket-head and hex-head styles of header bolts available. Hex types are heat-treated Grade 5 steel and have smaller-than-standard heads to ease access in tight spaces. Socket-head bolts are made from stronger Grade 8 steel for added ruggedness and they're great for those really difficult-to-reach spots. Both styles have a protective black oxide finish.

Showing In Stock Items. Show All 14 Items.

Results 1 - 13 of 13

Mr. Gasket Header Bolts 918G

Mr. Gasket Header Bolts 918G

Mr. Gasket Header Bolts 918G

Header Bolts, Hex Head, 8mm x 1.25 Thread Size, Steel, Black Oxide, 0.984 in. Underhead Length, Chevy, Small Block LS, Set of 12

Part Number: MRG-918G

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Mr. Gasket Header Bolts 3420G

Mr. Gasket Header Bolts 3420G

Mr. Gasket Header Bolts 3420G

Header Fasteners, Bolts, Allen Head, Steel, Black Oxide, 3/8 in.-16, .750 in. UHL, Set of 12

Part Number: MRG-3420G

3.27 out of 5 stars ( 11 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 917

Mr. Gasket Header Bolts 917

Mr. Gasket Header Bolts 917

Header Bolts, Hex Head, Steel, Black Oxide, 3/8 in.-16, 1.000 in. U.H.L., Set of 12

Part Number: MRG-917

4.63 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 976

Mr. Gasket Header Bolts 976

Mr. Gasket Header Bolts 976

Header Bolts, Hex Head, Steel, Black Oxide, 5/16 in.-18, 0.750 in. U.H.L., Chrysler, Small Block, Set of 14

Part Number: MRG-976

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 2211G

Mr. Gasket Header Bolts 2211G

Mr. Gasket Header Bolts 2211G

Header Fasteners, Bolts, Hex Head, Stainless Steel, Chevy, Ford, Buick, Set of 16

Part Number: MRG-2211G

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 2210G

Mr. Gasket Header Bolts 2210G

Mr. Gasket Header Bolts 2210G

Header Fasteners, Bolts, Hex Head, Stainless Steel, Chevy, Chrysler, Pontiac, Set of 12

Part Number: MRG-2210G

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 970G

Mr. Gasket Header Bolts 970G

Mr. Gasket Header Bolts 970G

Header Bolts, Hex Head, 8mm x 1.25 Thread Size, Steel, Black Oxide, 0.984 in. Underhead Length, Dodge, Ford, Set of 17

Part Number: MRG-970G

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 915

Mr. Gasket Header Bolts 915

Mr. Gasket Header Bolts 915

Header Fasteners, Bolts, Hex Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12

Part Number: MRG-915

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 916

Mr. Gasket Header Bolts 916

Mr. Gasket Header Bolts 916

Header Fasteners, Bolts, Allen Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12

Part Number: MRG-916

4.4 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 978G

Mr. Gasket Header Bolts 978G

Mr. Gasket Header Bolts 978G

Header Fasteners, Bolts, Allen Head, Black Oxide, Steel, 8mm x 1.25 Thread, 25mm Length, Set of 16

Part Number: MRG-978G

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 3409

Mr. Gasket Header Bolts 3409

Mr. Gasket Header Bolts 3409

Header Fasteners, Bolts, Hex Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12

Part Number: MRG-3409

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 919G

Mr. Gasket Header Bolts 919G

Mr. Gasket Header Bolts 919G

Header Bolts; Hex Head; 0.375 in.-16 x 0.75 in.; 16 pc.

Part Number: MRG-919G

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Mr. Gasket Header Bolts 915A

Mr. Gasket Header Bolts 915A

Mr. Gasket Header Bolts 915A

Header Bolts; Hex Head; 0.375 in.-16 x 0.75 in.; 100 pc.

Part Number: MRG-915A

Not Yet Reviewed

Estimated Ship Date: Nov 9, 2026 if ordered today

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Estimated Ship Date: Nov 9, 2026 if ordered today

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